Summer can be the most stressful time of year for landscape plants with heat and drought being the main offenders. When not receiving sufficient moisture, plants are much more susceptible to insect and disease damage.
It can be tempting to create a rainbow of riotous shades in container gardens, but are they as pretty as you imagine? Too many colors can be distracting and disjointed, giving your containers a haphazard, messy look.
Once upon a time, Mary, Mary, Quite Contrary grew her garden with silver bells and cockleshells, but nowadays, most gardeners use some other forms of fertilizer that are better formulated than nursery rhymes.